Method of forming or treating roadways.



- UNIT STATES" Patented January 31, 1905.

PATENT OFFICE.

FRIEDRICH WILHELM ALEXANDER LOEBELL, OF MIIGELN, NEAR f DRESDEN, GERMANY.

METHOD OF FORMING OR TREATING ROADWAYS.

SPECIFICATION forming part of Letters Patent No. 781,0?9, dated January 31 1905.

Application filed August 9, .1904:- I Serial No. 220,133.

To all whom, it mayponcern:

Be it known that I, FRIEDRICH WILHELM ALEXANDER LoEBELL, a subject of the King of Prussia, Emperor of Germany, residing at Miigeln, near Dresden, in the Empire of Germany, have invented a certain new and useful Improved Method of Forming or Treating Roadways, of which the following is a specification.

The object of this invention is to render the dust formed on road-surfaces harmless by securing it to the road. This problem, many attempts at solving which have been already made without material success, is attained in accordance with this invention by-the material intended for forming the roads or the finished roadway itself being moistened and impregnated with lyes. The most advantageous lyes for that purpose are the lyes from wood-pulp manufactories, take'nat that stage at which at present they are simply discharged into flowing water or got rid of in any other Way that is to say, after they, in the'case, say, of the sulfite lye of the Mitscherlich process, have been freedv from sulfurous acid. The moistening and the impregnation of the materials intended for road-making purposes can be effected before they are used in the road or during the making or repair of the road or finally afterwardthat is to say, after the roadway has been completed. The moistening and impregnation are eifected by means of suitable devices. For instance, sprinkling devices of well-known kind could be utilized for the purpose. I

The object of the invention is nearly perfectly attained by the moistening and impregnation with lyes, resinous ingredients, and salts contained in the lyes, bringing about the ce--.

menting of the materials together, and with the particles of dust adhering to them.

Apart from the high degree of binding of the dust to the constituent parts of the road attained by the present invention this method has a further advantage of maintaining the binding action for a considerably longer time than would be the case if such binding had been brought about by water or by special substances chemically prepared. This invention also constitutes an advance in technical science, owing to the fact that it finds application for a substance which hitherto represented a waste material.

What I claim as my invention, and desire to secure by Letters Patent, is

1. Method of freeing road from dust consisting in moistening the road material with lyes containing resinous and salt ingredients adapted to form a binding mass with the road material; substantially as set forth.

2. Method of freeing road from dust consisting in moistening the road material with water-lyes obtained from wood-pulp manufactories containing resinous and salt ingredients adapted to form a binding mass With the road material; substantially as set forth.

' In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

Witnesses:

O'rro HOEFF, MARTIN HABERER. 

